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Finding the Fourth Proportional to 124,417.20, 186,625.80 and 109,642.80

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Solution

The fourth proportional to 124,417.20, 186,625.80 and 109,642.80 is: 164,464.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,417.20 : 186,625.80 = 109,642.80 : x
  2. Step 2: Convert to fraction form
    124,417.20/186,625.80 = 109,642.80/x
  3. Step 3: Cross multiply
    124,417.20x = 186,625.80 × 109,642.80
  4. Step 4: Simplify right side
    124,417.20x = 20,462,175,264.24
  5. Step 5: Solve for x
    x = 20,462,175,264.24/124,417.20
  6. Step 6: Final answer
    x = 164,464.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.